Geoboard (9×9) – Educational Tool for Shape Exploration
 

This is a 3D printable *Geoboard* with a 9×9 pin layout, designed as a hands-on educational tool for exploring geometry and creativity.

### 🔍 Purpose

Geoboards are widely used in STEM and early childhood education to help learners understand shapes, symmetry, area, and spatial reasoning through tactile play.

This version allows students or children to stretch rubber bands between the pins to create:

- Polygons and geometric figures
- Symmetry patterns
- Letters and numbers
- Creative faces and artwork

### 🧱 Structure

- Base size: 100×100 mm with rounded corners
- 81 vertical pins arranged in a 9×9 grid (pin diameter: 3mm, height: 5mm)
- Each pin has a small fillet to reinforce durability when 3D printed

### 🖨 Print Tips

- Recommended filament: PLA
- Use **"Random seam position"** to avoid visible seam lines
- No supports needed
- Print time: Approx. 1 hour on Bambu Lab A1 mini

### 🎓 Educational Use

You can use this Geoboard in classrooms, home learning environments, or creative play.  
Rubber bands in multiple colors (available at 100-yen shops or dollar stores) make it even more fun!